acpi/apei/einj.rst

1 .. SPDX-License-Identifier: GPL-2.0
11 for early boot messages similar to this one::
15 which shows that the BIOS is exposing an EINJ table - it is the
43 - available_error_type
51   0x00000002        Processor Uncorrectable non-fatal
54   0x00000010        Memory Uncorrectable non-fatal
57   0x00000080        PCI Express Uncorrectable non-fatal
60   0x00000400        Platform Uncorrectable non-fatal
67 - error_type
72 - error_inject
76   write should be the last step when injecting errors.
78 - flags
95 - param1
100   physical memory address. [Unless "flag" is set - see above]
102 - param2
106   Linux requires page or narrower granularity, say, 0xfffffffffffff000.
108 - param3
112 - param4
115 - notrigger
117   The error injection mechanism is a two-step process. First inject the
129 - einj_types:
134 - $dport_dev/einj_inject:
145 extension (enabled with the param_extension=1 module parameter, or boot
151 the target of the injection. For processor-related errors (type 0x1, 0x2
167 	+-------------------------------------------------+
169 	+-------------------------------------------------+
174 An ACPI 5.0 BIOS may also allow vendor-specific errors to be injected.
177 the vendor-specific extension to tell that they are running on a BIOS
189   0x00000002	Processor Uncorrectable non-fatal
191   0x00000010	Memory Uncorrectable non-fatal
193   # echo 0xfffffffffffff000 > param2		# Mask - anywhere in this page
204 …or on CPU_SrcID#0_Channel#0_DIMM#0 (channel:0 slot:0 page:0x12345 offset:0x0 grain:32 syndrome:0x0…
213 	0x00010000  CXL.mem Protocol Uncorrectable non-fatal
228   1) Determine physical address of enclave page
232   4) Store data to the virtual address matching physical address from step 1